Astronauts need tougher workouts in space

[cygonaut]

New Data Show Rapid Arctic Ice Decline Proportion of Thicker, More Persistent Winter Cover Is the Lowest on Record GOCE Spacecraft Fires Up QinetiQ Ion EnginesRequire Much Less Propellant Than Conventional Thrusters Antarctic Wilkins Ice Shelf’s last bridge to the coast now completely broken off and can be seen in satellite images as a free-floating island of ice Astronauts need tougher workouts in spaceStudy: Resistance training staves off muscle loss during long space missions Spin offs  How space research helped earth Space Tourist Flights to ISS Still On, Says Space Adventures The U.S. will be challenged in space Origin of life .

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